C++ FAQ Celebrating Twenty-One Years of the C++ FAQ!!!
(Click here for a personal note from Marshall Cline.)
Section 33:
33.1 Is the type of "pointer-to-member-function" different from "pointer-to-function"?
33.2 How do I pass a pointer-to-member-function to a signal handler, X event callback, system call that starts a thread/task, etc?
33.3 Why do I keep getting compile errors (type mismatch) when I try to use a member function as an interrupt service routine?
33.4 Why am I having trouble taking the address of a C++ function?
33.5 How can I avoid syntax errors when creating pointers to members?
33.6 How can I avoid syntax errors when calling a member function using a pointer-to-member-function?
33.7 How do I create and use an array of pointer-to-member-function?
33.8 How do I declare a pointer-to-member-function that points to a const member function?
33.9 What is the difference between the .* and ->* operators?
33.10 Can I convert a pointer-to-member-function to a void*?
33.11 Can I convert a pointer-to-function to a void*?
33.12 I need something like function-pointers, but with more flexibility and/or thread-safety; is there another way?
33.13 What the heck is a functionoid, and why would I use one?
33.14 Can you make functionoids faster than normal function calls?
33.15 What's the difference between a functionoid and a functor?
[33.12] I need something like function-pointers, but with more flexibility and/or thread-safety; is there another way?

Use a functionoid.